Dashboard Information:In my ILE project I am trying to use latent trajectory factor analysis (LTFA) to infer from cognitive test performances the longitudinal change of cognitive ability among Alzheimer’s Disease patients, as well as its relationship between those cognitive test performances.
This dashboard summarizes the Health Brain Study data that I use and model outcomes from my longitudinal cognitive change inference. It includes exploratory visualizations for missingness of longitudinal visits of the dataset, summarize of longitudinal trends by visits for cognitive tests, and finally, the estimated Cognitive ability’s relationship with cognitive test performance.
Github link:https://github.com/Michael89757/DATA_555_Dashboard
project Impact: This dashboard helps understand the Emory Health Barin Study data with a interactive way, and it also visualize longitudinal cognitive trajectories and its connection with cognitive tests performances, can help to identify patterns that may indicate early neurodegenerative changes and testify efficiency of cognitive tests in pre-clinical measurements.
The dataset used in this analysis originates from the Emory Health Brain Study (EHBS). It is a sub-study within the Emory Healthy Aging Study (EHAS), which is an observational study designed to advance the understanding of healthy aging and the development of agerelated diseases through well-defined, community-based prospective cohorts.The derived dataset, cleaned collaboratively, contains individual-level identifiers (GUID), record IDs for each visit, visit event names, demographic information of the participants, and their performance on various cognitive tests across visits.EHBS specifically recruits up to 2,500 EHAS participants aged 50 to 75 who have no diagnosis of AD.
The following table lists the names of cognitive tests and their corresponding meanings:
| Cognitive.Test.Name | Meaning |
|---|---|
| RAVLT A6 | Rey Auditory Verbal Learning Test A6 Total Correct (Immediate Recall) |
| RAVLT A7 | Rey Auditory Verbal Learning Test A7 Total Correct (Delayed Recall) |
| JOLO | Judgment of Line Orientation Total Number Correct |
| MiNT | The Multilingual Naming Test Total Correct (sum of uncued + semantic cue, max = 32) |
| SDMT | Symbol Digit Modalities Test Total Correct |
| NumSpanBack | Number Span Backward Test: Longest Span Correct |
| NumSpanFwd | Number Span Forward Test: Longest Span Correct |
| Trails_A | Trail Making Test (Part A) |
| Trails_B | Trail Making Test (Part B) |
| Verbal Fluency F | Verbal Fluency - Number of F-words generated in 60 seconds |
| Verbal Fluency L | Verbal Fluency - Number of L-words generated in 60 seconds |
| RCFT_Immediate | Rey Complex Figure Test (Immediate Recall) |
| RCFT_Delayed | Rey Complex Figure Test (Delayed Recall) |
| Category Total | Category Fluency - Total Animals |